I think you can just use the TV's as monitors and just 'extend desktops' to either one, depending on which one you use as your main, can't you? In that case, each resolution will be independent of each other. If you have an audio loop cable for the video card, you can get audio through HDMI via DVI port, correct? Either way, you'd need headphone jack -> Red/White component to get sound on the S-Video TV.